Hoisting mechanism for motor-vehicles.



GIA. woon. HOISTING MECHANISM FOR MOTORl VEHICLES.

APPLICATlON FILED AUGZB. 1915. v l ,27 ,Q97 l, Patented July 9, 1918'.

'SSHEETS-SHEET l.

G. A. WOOD.

I HOISTING MECHANISM FOR IVIOTUR VEHICLES. APPLICATION FILED AUG.28. 1916. l ,2? l ,97 l Patented July 9, 1918.

3 SHEETS-SHEET 2.

f G. A. Woon.

HOISTING `MECI-IANISNI FOR MOTOR VEHICLES.

APPLICATION FILED AUG.28. I9|6`.

Patented July 9, 1918r naar muon.

HOISTING MECHANISM FOR MOTOR-VEHICLES.

Application led August 28,

lend upwardly about pivots at the rear end of the chassis, and hydraulic hoisting means has been used for this purpose. 4The most convenient source from which to operate the hoisting means is the propeller shaft (ordi` narily arranged longitudinally of the vehicle) but, on account of the fact that the heavy loads and shocks incident to hoisting -are borne on the side frame and independentlyof the propeller shaft, the deflection of the former is not transmitted to the latter. Again, it is desirable to provide for slight inaccuracies in the construction of either hoisting means or chassis (often made by different manufacturers), whereby assembling of the parts is facilitated. It is further desirable to avoid the liability of leakage which results from independently supporting the pumping and hoisting elements of which the hoisting means asl a whole is made up, and to provide for convenient control of the mechanism by the driver'of the vehicle. With' these ends in view, the pgresent invention consists in means for so connecting the pump driving means to the power shaft as to allow the'parts to be readily assembled--and to be thereafter operated without in any way tending to bend the propeller shaft; in a unitary pump and hoisting cylinder mounted on a supplementary frame which is itself carried`by the chassis and in control mechanism also carried by the unitary pump and hoisting cylinder whereby the several operations incident to the use thereof may be readily controlled by the driver. It also consists in the details of construction shown, described and particularly pointed out in the claims.

Certain general combinations of elements and certain ,specific features relevant to the construction of the mechanism shown and claimed herein are claimed in my earlier copending applications for U. S. Letters Patent, namely S. N. 183,979, filed August 1, 1917, (renewal of S. N. 14,480, filed March 15, 1915) Speciication of Letters I'atent.

cates the side Patented July 9, 1918.

1916. serial No. 117,236.

and the division thereof S. N. 115,957, filed Aug. 21, 191e;

S. N. 14,479, filed March 15, 1915, and the diwision thereof S. N. 117 ,235, filed Aug. 28, 19 6.

In the drawings, Figure 1 is a fragmentary side view of a motor truck showing a preferred embodiment of my invention. Fig. 2 is a front elevation corresponding to Fig. 1, parts being omitted. Fig. 3 is an enlarged view on the line 8-3 of Fig. 1. Fig. 4 is a part-elevation part-central vertical section corresponding to Fig. 3. Fig. 5 is a section on the line 5-5 of Fig. 4. Fig. 6 is a plan view of the clutch mechanism, parts being broken away. Fig. 7 is a section on the line 7-7 of Fig. 6. Fig. 8 is a fragmentary end view showing a modification. Fig. 9 is a fragmentary side view corresponding to Fig. 8, parts being broken away. Fig. 10 is a section on the line 10-10 of Fig. 9. Fig. 11 is a plan view ofone member of the clutch.

Similar reference characters refer to like parts throughout the several views.

Referring to the'embodiment of my invention shown in Figs. 1 to 7, inclusive, 1 indiframes of the vehicle to the rear end of which are secured brackets 2 bearing pivots 3 Iabout which the body 4 may be swung vertically for dumping purthrough cross bar 12, sheaves 13, cables 14 (shown in dashed lines inFig. 1), equalizing bar 15, shackle 16 (omitted in Fig. 1) and brackets 17 secured to the body, serves to elevate the front end of the latter. The cylinder has secured to its upper end a chamber or tank 19 that may be in Afree communication with the interior of the cylinder above the piston, whereby storage s ace for liquid is formed. 0

Attached to the base 9 by bolts 21 1s a gear pump 22 ontaining the driven gear 23v -shaft 34, (and it will be seen that the relative dimensions of the parts is such as to allow considerable deflection of the side frames and hoisting cylinder Without bringing the sleefvte into bearing engagement with the s a The latter has rigidly secured thereto a clutch member that may be formed of the lduglicate clamp sections 35 secured together bolts 36. Slidably mounted upon the s eeve is a clutch shifting member 38, groved at'39 to receive the yoke blocks 40 into which are threaded the bolts 41 that also ass through the ends of the levers 42. The atter are secured to a shaft 43 that is mounted in the ears 44, rigid with the pump casing, and may be swung about the axis o1 the shaft by an arm 45 and a link 46 pivoted at 47 to a lever 48 that, in turn, is pivoted to the tank 19 at 49. Projecting from the member 38 `at each side is an ear 50 (Fig. 6) through which passes a bolt 51 that is threaded therein; reduced portions of these bolts also extend through an annular clutch rin 52 and have reduced inner ends 53 that sli e longitudinally in-slots 54 formed in the sha t on the pins or bolts 51 to automatically compensate in one direction for lack of alinement ,between the propeller shaft and the sleeve. Lack of alinement in a direction at right angles to that first mentioned is provi ed for by slippage of the clutch members 35 on teeth 55 that project from the ring 52, and loverla the members 35 when thrust to the left lig. 6). Consequently, rotation of the shaft may be transmitted undiminished to the sleeve even though their axes are not coincident and regardless ofthe fact that considerable deflection of the sleeve mag takeplace ,when lifting heavy loads.

s stated previously,`the tank 19 constitutes a storage lreceptacle for liquid (preferably oil) and communication is established between the tank 'and intake passage 58 of the pumpI (Fig. 5) by a pipe 59 and fitting 60, and 1s expelled ,from the gears' throu the discharge passage that may e brought into connection with; thespace between the lower end of the cylinder and the piston (not shown) `by athree-way valve 61 and passage 62 (Fig. 5). Another passage 63 leads from the intake to the passage 62,

and, when the valve is in the position shown,

the liquid by-passes the gears and the piston sinks. vVarious other arrangements of passages for the li uid may, of course', be used, but that descri ed is preferred since, besides the advantages already stated, the liquid may be circulated'continuously within the pump itself by turning the valveso as to close the passage 62, which avoids starting and stoppin of the engine. The valve may be operate by means of the lever 64, linkI 65 and lever 66, 'and the'throw of both the lever 66 and the lever 48 may be limited by the stop 67 that projects from the .tank 19.

Instead of locatmg the pump so that thel propeller shaft passes through the driving gear, a similar pump 68 having gears that correspond in function to the gears 23 and 24 may be mounted on the cro bars 8 as indicated in Fig. 8.. In this instance the liquid is drawn from the tank through the plipe-69 and discharged through the pipe 70 into the space beneath the piston, as before. The shaft of the driving, gear, that is, the gear which corresponds to the gear 24, -however, is driven by a sprocket gear 71 and chain 72 from a' second sprocket gear 73 rigid with a sleeve 74, and the latter is rotata ly mounted in a split bracket 75 secured to one of the cross' bars. Longitudinal movement of the sleeve in respect. to'- the bracket is revented by the flanges 76 and 77. `It wil be noted that the inner diameter of the sleeve is considerably greater than bracket 75, and a lever 85 and link'86 con- Stitute means for shifting the collar and pins in respect to the sleeve. When the pins are thrust to the right (Fig. 9) they engage with teeth 88 on a floating ring 90 drilled tov receive pins 91 on the arms 9g.

of a two-part member 93 `that is clamped to the propeller yshaft by bolts 94. In order to prevent the ring 90 from shiftino transversely on the pins 91 when the clutc i'members are not engaged, opposed springs 95 are inserted between the arms 92 and the` rin 90.v 4

a tions the bars 8 constitute a frame (supplethereon) on which is directly carried 'a unit' wh1ch comprises both the hoisting cylinder win be observed that in both modifica,

mentar'y to that of the chassis andA resting and the gear pump. This construction is of much importance for the reason that, were tically impossible to maintain tight joints.

Again, the construction, being itself assembled and including all necessary parts, is readily assembled on and, accommodates itself without alteration to slight variations in the chassis. Its control levers are located -at a point where they are accessible to the cent foot space is ordinarily substantially filled.

Obviously, the details of the various parts may be changed without departing from the spirit of my invention. I do not, therefore, wish to be limited otherwise than as indicated by the subjoined claims.

I claim l. In combination with the frame anda rotatable shaft of a motor vehicle, a hoisting device supported by the frame, and clutch mechanism for actuating the hoisting device from the shaft, part of said clutch mechanism being carried by the shaft and another part being supported independently thereof, one of the parts being capable of bodily movement transversely of the shaft, whereby considerable deiection of the frame in respect to the shaft may take place without inducing bending stresses in the shaft, and a manually operated lever for shifting an element of one of said clutch mechanism parts to or from driving engagement with an element of the other clutch mechanism part at will.

2. In combination with the frame and a rotatable shaft of a motor vehicle, a driven mechanism 'supported by the frame and clutch means for act-uatinflr the driven mech` anism from the shaft, said clutch means including an element fixed to the shaft torotate therewith, a clutch ring supported by said element` and movable bodily transversely of the shaft, said clutch means including a tubular member spaced from and surrounding the shaft, said member being supported independently of the shaft, and manually controllable means shiftable at will in respect to the tubular member through which force for driving the tubular member from the clutch ring is transmitted when said shiftable means is in one position.

3. In combination with the frame .and a rotatable shaft of a motor vehicle, a driven mechanism supported by the frame, a clutch member rotatable with the shaft, a .rotatable member supported by the frame and extending around said shaft and spaced therefrom,- a pin slidable through the rotatable mem ber -into and from the path of 'the clutch member.

4. In\combination with the frame and a rotatable shaft of a motor Vehicle, a hoisting device supported by the frame, and clutch mechanism for actuating the hoisting device from the shaft, part of the clutch mechanism being carried by the shaft and another part being supported independently thereof, said rotatable shaft passing through said last mentioned part of the clutch mechanism, one of the parts of the clutch mechanism being capable of movement transversely of the shaft whereby deflection of the frame in respect to the shaft, due to loads on the hoisting device, may take place without inducing transverse bending stresses in the shaft.

5. In-combination with the frame and a rotatable shaft of a motor vehicle, a hoisting device supported by the frame, and clutch mechanism for actuating the hoisting device from the shaft, part of the clutch mechanism being carried by the shaft and another part being supported independently thereof, onev of the partsbeing capable of movement transversely of the shaft, whereby deiiection of the frame in respect to the shaft, due to'loads on the-hoisting device, may take place' without inducing transverse bending stresses in the shaf-t,one of the clutch parts being movable longitudinally of the shaft to engage with or disengage from the other parts whereby rotative movement of the shaft is made to cause rotative movement of the clutch part that is sup'- ported independently of the shaft.

6. In combination with the frame and a rotatable shaft of a motor vehicle, a hoisting device supported by the frame, and clutch mechanism for actuating the hoisting devicefrom the shaft, part of the clutch mechanism being carried by the shaft and another part being supported independently thereof, said rotatable shaft passing through said last mentioned part and being spaced therefrom, one of the'parts being capable' of movement transversely of the shaft, whereby deflection of the framev in respect to the shaft, due to loads on the hoisting device, may take place without inducing transverse bending stresses vinthe shaft, one of the clutch parts being Y 7. In combination with thel frame and a rotatable shaft of a motor vehicle, a hoisting device supported by the frame, and mechanism for actuating the hoistingde-vice from the shaft, said mechanism including a sleeve supported by the frame and through which the shaft passes, said shaft .being spaced from the sleeve, a clutch member secured to the shaft, a second clutch member carried by the sleeve, said second clutch member also being-spaced from the shaft, whereby deiiection of the sleeve in respect to the shaft may take placewithout inducing bending stresses in the shaft. i

8. In combination with the'frame and a rotatable shaft of a motor vehicle, a hoisting device supported by the frame, and

vmechanism for actuating the hoisting device from the shaft, said mechanism including a sleeve supported by `theframe and through which the shaft passes, said shaft being spaced from the sleeve, a clutch meml ber secured to the shaft, a second clutch member carried by the sleeve, said second cliitch member also beingspaced from the shaft, whereby deflection of the sleeve in respect to the shaft may take place without inducing bending stresses in the shaft, one

of the clutch members being movable longitudinally of the shaft to be engaged with or disengaged from the other clutch mem.- ber at will.

9. In combination with the frame and a rotatable shaft of a motor vehicle, a hoisting device supported by the frame, and mechanismfor actuating the hoisting device from the shaft, said mechanism including a sleeve supported by the frame and through which the shaft passes, said shaft being spaced from the sleeve, a clutch member secured to the shaft, a second clutch member carried by the sleeve, means v for preventing rotative movement an for allowing longitudinal movement of the second clutch member in respect to the sleeve to thus engage with or disengage from the first mentioned clutch member,` said second clutch member also being spaced from the shaft, whereby deiiec tion of the sleeve in respect to the shaft may take place without inducing bending stresses in the shaft.

10. In combination with the frame and a rotatable shaft of 4a motor vehicle, a hoisting device supported by the frame, and mechanism for actuating the hoisting device from the shaft, said mechanism including a sleeve supported by the frame and through which the shaft passes, said shaft being spaced from theV sleeve,av.`clutch member secured to i the shaft, a secondl clutchmember carried by the.sleeve, means for preventing rotativey 4 movement and for allowingflongitudinal movementof the second clutch member in respect to the sleeve, means in respect to which the sleevev and second clutch member are rotatable, for moving the second clutch ,.member longitudinally vof, the .shaft to engage with or disengagefrom `.the first mentioned clutch' member atwill, fsaid clutch member alsof being spaced-.fromy the shaft.y

whereby. deflection of the sleeveinrespect to I, the shaft,mayftakegplacewithout inducing lbending'stresses in theshaft.

11. In combination with the frame and a rotatable shaft of a motor vehicle, a hoisting device supported by the frame, and mechanism for actuating the hoisting device from the shaft, said mechanism including a rotatable member supported by the frame and through which the shaft passes, said shaft being spaced from the rotatable member, a clutchmember support secured to the shaft, a clutch -member carried by the support, a second clutch member carried by the rotatable member, said second clutch member also being nspaced from the shaft, whereby deflection of the rotatable member in respect to the shaft may take place without inducing bending stresses in the shaft, and means whereby the first clutch member is allowed limited movement transversely of the sh aft.

12. In combination with the frame and a rotatable shaft of a moto-r vehicle, a driven mechanism supported on the frame, and clutch mechanism for actuating the driven mechanism from the shaft, part of the clutch mechanism being carried by the shaft and another part being supported independently thereof, one of the parts being capable of considerable bodily movement transversely of the shaft, said shaft passing through said last mentioned part and a manually actuated lever for connecting and disconnecting the parts of the clutch mechanism at will.

13. In combination with the frame of a motor vehicle and a driving shaft supported thereby, a clutch ring encircling the shaft and spaced therefrom, means carried by the shaft for supporting the clutch ring to swing about an axis at right angles to and substantially intersecting the axis of the shaft, said clutch ring having limited movement along 'the axis labout which it is swingableJ and manually actuated means spaced from the shaft and movable at will into and from engagement with the clutch rin at points spaced angularly considerably a out the shaft from the ends of the axis about which the clutch ring swings, whereby the shaft may be caused to drive the manually actuable means at will,

14. In combination with the frame and a rotatable shaft of a motor vehicle, a driven mechanism supported by the frame, and

clutch mechanismA for actuating the driven' mechanism from the shaft, said clutch mech-Y y anismuincluding a part supported by they shaft, a second part rotatably supported independently of theshaft, and -a third part includingla lplurality of p ins supported in said second part and slidable invrespe'ct to said second part longitudinally of the shaft to and from engagement with the first mentioned partsaid second part being spaced fromsaid shaft, whereby relative movement of the second member andthe shaft transy a rotatable shaft of a motor vehicle, a hoisting device supported by the frame, and mechanism for actuating said hoisting device, said mechanism including a hollow sleeve carried by and rotatable in respect to said frame. said shaft passing through said sleeve` and being spaced therefrom, a member secured rigidly to the shaft, a floating clutch ring supported by said member, resilient means interposed between the member and the clutch ring, and a second clutch member rotatable with the sleeve and slidable longitudinally in respect to the shaft whereby it may be engaged with or disengaged from the floating clutch ring, the whole arrangement allowing deflection 0f the frame and sleeve Without inducing transverse bending stresses in the shaft.

16. In combination with the frame and first sprocket wheel froln said shaft, saidl means allowing deflection of the sprocket wheel, due to loads on the hoisting devlce,

without causing transverse bending stresses in the shaft.

17. In combination with the side bars and a driven shaft of a motor vehicle, a supplemental support ,extending across between the side bars, a body tiltable on said truck, an upright hoisting cylinder supported on the supplemental support forward of the front end of the body for tiltingy the body, means including a rotatable member supported on lthe supplemental support and spaced from and encircling said shaft, whereby liquid may be pumped to said cylinder at will and whereby relative deflection of said support and shaft is allowed.

.18. In combination with the frame and a rotatable shaft of`a motor vehicle, a hoisting device supported by the frame, and

mechanism for actuating the hoisting de-` vice from the shaft, said mechanism including a rotatable member supported bythe frame independently of the shaft, said member extending around the shaft and being spaced therefrom, and mea.nsincluding a pair of pins carried by said member and projectible therefrom, whereby the rotatable mellnber may be connected to the shaft at wil 19. In combination with the frame and a driven shaft of a motor vehicle, a clutch ring, means for supporting said ring to swing about an axis substantially intersecting the axis of the shaft and at right angles to the axis of said shaft, said ring having clutch faces located in a plane at a large angle to the plane determined by the axis of the shaft and the aXis about which the clutch ring swings, aI rotatable driven element extending around the shaft and spaced considerably therefrom, and a pair of pins projectible from said element into the path of the clutch faces at will.

20. In combination with the frame and a shaft of a motor vehicle, a driven device on the vehicle, means for driving said device from the shaft, said means including an annular member through which the shaft passes, a clutch element slidable longitudinally of the shaft through which the an-l nular member may be driven from the shaft at will, said annular member being spaced from the shaft to allow relative movement transverselyof the axis of the shaft, means for shifting the clutch element longitudinally of the shaft so constructed and arranged that the weight of the parts tends to hold said clutch element out of the position in which it transmits ,driving stress from the shaft to the annular member.

21. In combination with a frame and a driven shaft of a motor vehicle, said frame and driven shaft constitutingtwo elements, a clutch ring, means for supporting said ring on one of the elements to swing about an axis at right angles to and substantially intersecting the axis of said shaft, said ring having clutch faces located in'a plane at a large angle to that determined by the axis of the shaft and the axis about which the ring swings, complementary clutch means carried by the other element, means for causing driving engagement between the clutch ring and the last mentioned clutch means at will, the parts being so constructed and arranged that the clutch ring and the complementary clutch means may have deflection relative to each other transversely of the shaft.

GARFIELD A. WOOD. v 

